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Controls in detail
Useful features
For more details concerning the Tele Aid
system, please visit www.mbusa.com and
use your ID and password (sent to you sep-
arately) to learn more (USA only).
Upgrade signals
The Tele Aid system processes calls using
the following priority.
ț Automatic emergency – First priority
ț Manual emergency – Second priority
ț Roadside assistance – Third priority
ț Information – Fourth priority
Should a higher priority call be initiated
while you are connected, an upgrade (al-
ternating) tone will be heard and the ap-
propriate indicator lamp will flash. If
certain information such as vehicle identi-
fication number or customer information is
not available, the operator may need to re-
transmit.
During this time you will hear a beep and
voice contact will be interrupted. Voice
contact will resume once the retransmis-
sion is completed. Once a call is conclud-
ed, a beep will be heard and the respective
indicator lamp will stop flashing. The MCS
system operation will resume.
i
The indicator lamp in the Information
button ¡ remains illuminated in red
for approx. 10 seconds during the sys-
tem self-check after turning key in the
steering lock to position 2 (together
with the SOS button and the Roadside
Assistance button •).
See system self-check (
୴ page 175)
when the indicator lamp does not light
up in red or stays on longer than ap-
proximately ten seconds.
If the indicator lamp in the Information
button ¡ is illuminated continuous-
ly and there was no voice connection to
the Response Center established, then
the Tele Aid system could not initiate
an Information call (e.g. the relevant
cellular phone network is not avail-
able).
The message
INFO CALL FAILED
ap-
pears in the MCS display.
Information calls can be terminated us-
ing the END button on the MCS.
!
If the indicator lamps do not start flash-
ing after pressing one of the buttons or
remains illuminated (in red) at any
time, the Tele Aid system has detected
a fault or the service is not currently ac-
tive, and may not initiate a call. Visit
your Mercedes-Benz Light Truck Cen-
ter and have the system checked or
contact the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada) as soon
as possible.